Initial Commit
This commit is contained in:
commit
822df7fe35
GPG Key ID:
C7DC4679EC6CE92D
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Copyright (c) 2020, Adalricus Ovicula <adalricus@inventati.org>
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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Cortris
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=======
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Cortris is a simple url shortener
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Database Structure
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------------------
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Database Name: cortris
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shortURL: Not Null
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time: Not Null
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url: Primary Key & Not Null
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// Cortris is a simple url shortener
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// Copyright (c) 2020, Adalricus Ovicula <adalricus@inventati.org>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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package main
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import (
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"database/sql"
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"html/template"
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"log"
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"math/rand"
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"net/http"
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"time"
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"github.com/gorilla/mux"
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_ "github.com/mattn/go-sqlite3"
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)
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func main() {
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rand.Seed(time.Now().UnixNano())
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r := mux.NewRouter()
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r.HandleFunc("/", indexH).Methods("GET")
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r.HandleFunc("/short/", sURLH).Methods("POST")
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r.HandleFunc("/{sURL}/", urlH).Methods("GET")
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r.PathPrefix("/static/").
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Handler(http.FileServer(http.Dir("./")))
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log.Println("listening on port 8080...")
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srv := &http.Server{
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Handler: r,
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Addr: "127.0.0.1:8080",
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WriteTimeout: 8 * time.Second,
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ReadTimeout: 8 * time.Second,
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}
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log.Fatal(srv.ListenAndServe())
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}
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type shortP struct {
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ShortURL string
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URL string
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}
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func indexH(w http.ResponseWriter, r *http.Request) {
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t, _ := template.ParseFiles("templates/index.html")
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t.Execute(w, nil)
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}
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// This is the POST endpoint
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func sURLH(w http.ResponseWriter, r *http.Request) {
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if err := r.ParseForm(); err != nil {
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errChk(err)
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}
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dbL := "/home/adalricus/projects/db/adalricus.db"
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url := r.FormValue("url")
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db, err := sql.Open("sqlite3", dbL)
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errChk(err)
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defer db.Close()
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// Checks if url is already in the database
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stmt, err := db.Prepare("SELECT shortURL FROM cortris WHERE url = ?")
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errChk(err)
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defer stmt.Close()
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var shortURL string
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err = stmt.QueryRow(url).Scan(&shortURL)
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// If short url doesn't exist then create it
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if len(shortURL) == 0 {
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shortURL = randS(8)
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tx, err := db.Begin()
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errChk(err)
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stmt, err := tx.Prepare("INSERT INTO cortris(url, shortURL, time) VALUES(?, ?, ?)")
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errChk(err)
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defer stmt.Close()
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_, err = stmt.Exec(url, shortURL, time.Now().UTC())
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errChk(err)
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tx.Commit()
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}
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p := shortP{
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ShortURL: shortURL,
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URL: url}
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t, _ := template.ParseFiles("templates/short.html")
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t.Execute(w, p)
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}
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// This handles short urls
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func urlH(w http.ResponseWriter, r *http.Request) {
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vars := mux.Vars(r)
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shortURL := vars["sURL"]
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dbL := "/home/adalricus/projects/db/adalricus.db"
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db, err := sql.Open("sqlite3", dbL)
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errChk(err)
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defer db.Close()
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stmt, err := db.Prepare("SELECT url FROM cortris WHERE shortURL = ?")
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errChk(err)
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var url string
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err = stmt.QueryRow(shortURL).Scan(&url)
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if len(url) != 0 {
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http.Redirect(w, r, url, http.StatusSeeOther)
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}
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}
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func errChk(err error) {
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if err != nil {
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log.Fatal(err)
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}
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}
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func randS(n int) string {
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var alphaNum = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
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b := make([]rune, n)
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for i := range b {
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b[i] = alphaNum[rand.Intn(len(alphaNum))]
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}
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return string(b)
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}
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Binary file not shown.
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After Width: | Height: | Size: 10 KiB |
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html {
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font-family: "Fira Sans";
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line-height: 1.5;
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background-color: #282a2e;
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color: #c5c8c6;
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}
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body {
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margin: auto;
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padding: 0;
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max-width: 80ch;
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}
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header,
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main,
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footer {
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margin: 1rem;
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padding: 0.5rem 1rem;
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}
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main {
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background-color: #1d1f21;
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}
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footer {
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text-align: right;
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}
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blockquote {
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padding: .5rem 1rem;
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margin: .8rem 0;
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color: #c5c8c6;
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border-left: .25rem solid #282a2e;
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}
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@media (min-width: 30em) {
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blockquote {
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padding-right: 5rem;
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padding-left: 1.25rem;
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}
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}
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img {
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display: block;
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margin: auto;
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border-radius: 5px;
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max-width: 100%;
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}
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code {
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padding: .25em .5em;
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font-size: 85%;
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background-color: #282a2e;
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border-radius: 0;
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}
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pre {
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display: block;
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margin-top: 0;
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margin-bottom: 1rem;
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padding: 1rem;
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font-size: .8rem;
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line-height: 1.4;
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white-space: pre;
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white-space: pre-wrap;
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word-break: break-all;
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word-wrap: break-word;
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background-color: #282a2e;
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}
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pre code {
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padding: 0;
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font-size: 100%;
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color: inherit;
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background-color: transparent;
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}
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a {
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color: #81a2be;
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text-decoration: none;
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border-bottom: 0.1rem dashed #81a2be;
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}
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a:visited {
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color: #b294bb;
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}
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a:hover,
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a:focus {
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border-bottom: 0.2rem solid #81a2be;
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}
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h1, h2, h3, h4, h5, h6 {
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margin-bottom: .5rem;
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font-weight: 400;
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line-height: 1.25;
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}
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h1 {
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font-size: 2rem;
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border-bottom: 0.16rem solid #cc6666;
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}
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h2 {
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margin-top: 1rem;
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font-size: 1.5rem;
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}
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h3 {
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margin-top: 1.5rem;
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font-size: 1.25rem;
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}
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h4,
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h5,
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h6 {
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margin-top: 1rem;
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font-size: 1rem;
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}
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ul, ol, dl {
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margin: 1rem 0;
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}
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hr {
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color: #cc6666;
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}
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table {
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margin-bottom: 1rem;
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width: 100%;
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border: 1px solid #282a2e;
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border-collapse: collapse;
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}
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td,
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th {
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padding: .25rem .5rem;
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border: 1px solid #282a2e;
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}
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tbody tr:nth-child(odd) td,
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tbody tr:nth-child(odd) th {
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background-color: #282a2e;
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}
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button,
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input,
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select,
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textarea {
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background-color: #282a2e;
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color: #c5c8c6;
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padding: 0.2rem 0.8rem;
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}
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textarea {
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width: 80%;
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}
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textarea {
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resize: vertical;
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}
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>Cortris</title>
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<link href="./static/style.css" rel="stylesheet">
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<link rel="icon" href="./static/favicon.png" type="image/png">
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</head>
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<body>
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<header>
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<a href="./">index</a>
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⁘ ⁘
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cortris
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</header>
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<main>
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<h1>Cortris</h1>
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<p>
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Cortris is a simple url shortener
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</p>
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<form action="./short/" method="post">
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<h3>URL to shorten</h3>
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<input type="text" maxlength="256" name="url" required>
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<input type="submit" name="submit" value="Go!">
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</form>
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<br>
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</main>
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<footer>
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<p>
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Copyright © 2020 Adalricus Ovicula<br>
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Cortris is licensed under the ISC License.
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</a>
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</p>
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</footer>
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</body>
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</html>
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>Cortris</title>
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<link href="../static/style.css" rel="stylesheet">
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<link rel="icon" href="../static/favicon.png" type="image/png">
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</head>
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<body>
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<header>
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<a href="../">index</a>
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⁘ ⁘
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cortris
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</header>
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<main>
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<h1>Cortris</h1>
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<ul>
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<li>Short URL: <a href="../{{ .ShortURL }}/">{{ .ShortURL }}</a></li>
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<li>Original URL: {{ .URL }}</li>
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</ul>
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<form action="./" method="post">
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<h3>URL to shorten</h3>
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<input type="text" maxlength="256" name="url" required>
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<input type="submit" name="submit" value="Go!">
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</form>
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<br>
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</main>
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<footer>
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<p>
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Copyright © 2020 Adalricus Ovicula<br>
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Cortris is licensed under the ISC License.
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</a>
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</p>
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</footer>
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</body>
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</html>
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